Estimated Glomerular Filtration Rate
Kidney Function marker
eGFR
Estimated Glomerular Filtration Rate
Calculated estimate of kidney filtration rate. Below 60 suggests kidney disease.
PED Notes
Calculated from creatinine, so muscular athletes will show falsely low eGFR. An eGFR of 60-80 in a muscular individual is likely normal. Cystatin C-based eGFR is more accurate for athletes -- request this test to get a true picture of kidney function. If creatinine-based eGFR is low but Cystatin C is normal, kidney function is fine.
When low
Supplements:
- Astragalus -- 500-1000mg/day, kidney support
Lifestyle:
- Stay well hydrated (3-4L/day)
- Limit NSAID use
- Request Cystatin C-based eGFR for accurate assessment
A creatinine-based eGFR can overstate kidney damage by 30% or more in muscular athletes: Why muscular athletes get false kidney failure diagnoses.
Educational information, not medical advice. Nothing here is a prescription or a treatment plan, and it does not account for your history, medications or conditions. Use it to ask better questions: bring it to your doctor and decide together. Full disclaimer.
History Chart
Reading History
Frequently Asked Questions
Reference Ranges
Standard Range
VitalMetrics Range